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4 Sheets-Sheet 1.

(No Model.)

. E. SONNTAG.

STEAM AGTUATBD VALVE AND EXPANSION GEAR. No. 270,854.

Patented Jan. 16,1883.

N. PETERS. Plmlo-Lilhographnr. Wzuhinglun. D. C.

'4 Sheets--Sheet 2.

(No Model.)

B. SONNTAG.-

STEAM AOTUATBD VALVE AND EXPANSION GEAR.

Patented Jan. 16,1883.

N. PETERS Phololilhugrnphon wnduin mu, D. c.

Y (No Model.) 4 Sheets-Sheet 3.

E. ,SONNTAG.

STEAM AGTUATED VALVE AND EXPANSION GEAR.

N0. 270,854. Patented Jan.16,1883. m

L" I "Jr/b :5 u

Fig.&. I

4 Sheets-Sheet 4.

(No Model.)

B. SONNTAG.

STEAM AUTUATED VALVE AND EXPANSION GEAR.

Patented J an.16,1883.

J QO d7 N, PETIRS. PhalvLilMgnphun Washinghm. n.c.

U'Nirnn STATES FICEQ ERNST SONN'IAG, OF LAUBAN, PRUSSIA, GERMANY.

SPECIFICATION forming part of Letters Patent No. 270,854, dated January 16, 1883,

Application filed May 16, 1882.

'(No model.) Patented in Germany June 14, 1881, No. 16,842; in Belgium November 23, 1881, No.

56,304; in Italy December 31, 1881, XV, 13,633, and in Denmark March 15, 1882, No. 52,587.

To all whom it may concern:

Be it known that I, ERNST SoNNTAG, a subjeot of the Emperor of Germany and King of Prussia, and resident ofLauhan, in the King.

dom of Prussia, have invented a new and useful Improvement in Steam-Actuated Valves and Expansion-Gears, (for which I have obtained a patent in Germany, No. 16,842, hearing date June 14, 1881; in Denmark, No. 2,587, 1881, hearing date March 15, 1882; in Italy, No. 13,633,Vol.15,bearingdateDecember3l,1881; in Belgium, No. 56,304, B, hearing date November 23, 1881,) of which the following is a specification.

My invention relates to improvements in steam-motors in which the distributing-valve is actuated directly by the steam; and the objects of myimprovements are, first, to arrange the steam ducts and valves in such manner that the motor operates in the most regular way; and,sccond, to adapt an expansion-gear tion upon the line to the aforesaid motor. 1 attain these objects by the mechanism illustrated in the accompanying four sheets of drawings, in Which- Figure 1 is a longitudinal section of the entire machine; Fig. 2, a top view, and Fig. 3 a vertical section, of the machine. Fig. 4 is an end view of the expansion-gear; Fig. 5, a sec- V W, Fig. 2; Fig. 6, a section upon the line X Y, Fig. 1. Figs. 7 and 8 are detailed views of a detached part of the machine. In Figs. 9 to 12 the different positions of the slide-valve are shown.

Similar letters refer to similar parts throughout the several views.

The steam enters through the pipe a into the valve-chest b. The steam-piston fslides in the cylinder 0. The cylinder-heads h have re enforcements for receiving the several steam-passages referred to hereinafter. The steam -distributing ports is and k leading from the steam-chest to the cylinder, are arranged in the usual manner. There are, moreover, the following steam-passages bored in the cylinder 0: first, the passages I 1, leading from the steam-chest b to the head-faces of the conical valves i 6; second, the passages 2 2, leading from vthe steam-chest to the conical seats of the valves i 2'; third, the passages 5 5, leading from the seats of the valves i i tothe steam-exhaust port l; fourth, the passage 3,

. duced in the compartment 00,

leading from the steam-chest to theexpansionvalve 11 referred to hereinafter; fifth, the passage 4, leading from the steam-chest to the other expansion-valve, p.

The slide-valve is formed by two pistons, r r, united together by the semi-cylindrical connecting-piece s. This latter is provided with two annular recesses, y y, and two cavities, z z, and the two pistons i" T have two very small holes, c o. By means of the hand-wheel w, the fork a, and the tappet t, fixed to the piece 8, the slide-valve may also occasionally be moved by hand.

The distribution of steam and the expansion are operated as follows: In the position of the slide-valve shown in Fig. 9 the steam enters the port k, the piston fis going from left to right, and the steam escapes through the port k If, now, by means of a device explained hereinafter, the expansion-valve p is opened, the compartment 00 of the steam-chest communicates by the passage 4 with the outer air There is therefore necessarily a rarefaction proand the slidevalve 1" 1" will advance till it covers the passage 4, and by so doing occupy now the position shown in Fig. 10. In this position no further steam is admitted to the port k, and the steam at the left side of the piston will therefore expand. At. the end of its stroke the piston fraises the valve 2' out of its seat, into which it is constantly pressed by the steam entering through the passage 1. Assoon as the valve i is raised out of its seat the passage 2 comes in communication with the passage 5, leading to the exhaust-port l, and thereforea second time a rarefaction is produced in the compartment 00' of the steam-chest, and the slide-valve advances till it covers the passage 2 at right hand and occupies the position shown in Fig. 11. The steam enters the port R and. by this means the pistonfis reversed. During the back motion of the piston the expansion-valve p communicating with the passage 3, is opened, a rarefaction is effected in the compartmentxof the steam-chest, and the slide-valve advances from right to left till it covers the passage 3. In this position, Fig. 12, the expansion begins, which is terminated when the steam-piston pushes back the left valve, 2', and,in the manner already described,

LII

, sage vance against the rarefied compartments more gradually and without any shock.

The two expansion -valves 1) and p are opened and closed by the following mechanism: The passage at communicates with the pipe 0, screwed to the cylinder-head, and over the pipe 0 slides another pipe, d, at the end of which the valve )7 is arranged.

slides in a guide of the standard g. The parts 0 d p g are, as to construction and operation, perfectly correspondent to the parts 0 d p g.

The outer end of the piston-rod a carries the socket b, turning freely round the piston-rod, and provided with two semi-lunary ribs, m m and, moreover, surrounded by a short squarethreaded piece, I. The two arms of the stainlard h, which latter, by one of these arms, guides the piston-rod a,,carry the. two triangles t" F, the helicoidal edges of which are evident from the top view of the machine,Fig.2. According to the reciprocating motion of the piston-rod, the helicoidal edges of the thread i will push against the helicoidal edges of the triangles t and t and in this way the socket b will alternatively be turned round the piston-rod a from the position shown in Fig.4 into the other position, represented by dotted lines in the same figure, or vice versa. If the socket 1) during the on tstroke of the piston occupies the position shown in Fig. 4, the rib m will catch the projecting center-pin of the valvep and press the latter out of its seat, which-it then re'takes by pression of a spiral spring. The other rib,m passes by the pin ot' the valve 19 but during the instroke of the piston the rib an catches the valve 12 and the rib m does not touch the valve 1). In order that the socket b at the end of each stroke may be maintained more steadilyin one or other position, the spring a, Fig; 8, fixed to l), catches into one or other of the two notches ot' the ring 0 of the piston-rod. The lever e, pivoting 0n the cross-piece f, secured to the standard h, serves to determine the degree of the expansion. For this purpose the ends of the lever e are united by the links 70 to-the sliding pipes (1 (P, which contain the valves 1) and 19 It, now, the lever e is brought in any distinct position on the quadrant y, the valves 1) and p The prismsecured to the bottom of the pipe (1, Fig. 4,

will also be opened at a distinct point of the course of the piston, and therefore the degree of the expansion will be determined.

The motor works also as an ordinary steampnmp without expansion, if the outlet-cocks g g of the valves 1) p are closed,orif the socket b is detached.

I am aware that prior to my invention stea-nimotors in which the distributing-valve is actuated directly by the steam have been made. l therefore do not claim such an arrangement, broadly; but

What I do claim as my inventiomand desire V to secure by Letters Patent, is-- 1. The combination, with the steam-actuated valve, of the valves 2' i, passage 1, leading from the steam-chest to the head-face of said valves, passage 2, leading from the steam-chest to the seats of said valves, and passage 5, leading from the seats of said valves to the steam exhaust port, slide-valve 1', having holes 12 and sliding in the steam-chest I), and the compartments m 00, which communicate with the seats of said valves 'i, and also with the outer air, substantially as set forth.

2. The combination, with the steam-actuated valve, of the conical valves 41 t, passage 1, leading from the steam-chest to thehead-faceot' said valves, passage 2, leading from the steamchest to the conical seats of said valves, and passage 5, leading from the seats of said valves to the steam-exhaust port 1, slide-valve r,having holes 0, and-sliding in the steam-chest I), the compartments 00 .00, which communicate with the seats of said valves i and also with the outer air, the expansion-valves pp and the passages 3 and 4, which leadfrom the steam -chest to said exp'ansionvalves, substantially as set forth.

In a steam-motor with steam-actuated valves, the combination of the steam-passages 3 and 4, pipes c 0 movable pipes d d sliding over the pipes 0 0 valves 19 19 attached to the pipes d al the socket b, turning on the piston-rod, and provided with semi-lunary ribs m m and square-threaded piece I, the stationary triangles t t'", with helicoidal edges, and the pivoted lever 6, connected through links 7a with the pipes d (1 arranged to operate in combination with the compartments m a" of the steam-chest, substantially in the manner and for the purpose herein described.

. ERN ST SONNTAG.

\Vitnesses:

HENRY E. Romans, RICHARD F. NAGLE. 

